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Condemned beef livers cause a loss of several million dollars each year. This loss is felt not only by the meat packer, but the animal husbandryman as well as the consumer. Percentagewise, the United States annually condemns in federally inspected meat packing plants between two and 20 percent of all beef livers. These beef livers are principally of three pathological types. These types include liver abscesses, telangiectasia, and the “sawdust” liver. Little is known of the three liver conditions in regard to their causative agents. By microscopic examination usually one finds gram-negative, granular filaments approximately 100 microns in length present in the exudate from the abscessed livers. Microorganisms of significance are seldom found in the telangiectasia and “sawdust” livers. This investigation concerns an organism isolated from a beef liver abscess.